Quantum state transformation and general design scheme on teleportation protocols  

作　　者：JIANG Min HUANG Xu ZHOU LiuLieZHOU YiMing ZENG Jia 

机构地区：[1]School of Electronics&Information Engineering,Soochow University,Suzhou 215006,China [2]Beijing Institute of Space Science and Technology Information,Beijing 100086,China [3]The 208th Institute of the Second Research Academy,CASIC,Beijing 100854,China

出　　处：《Chinese Science Bulletin》2012年第18期2247-2251,共5页

基　　金：supported by the National Natural Science Foundation of China(61104002,60904034and61071214);the Natural Science Foundation of Jiangsu Province(BK2011283and BK2011377);the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(10KJB510024)

摘　　要：We present a scheme for probabilistic transformation of special quantum states assisted by auxiliary qubits.In our scheme,if quantum states can be rewritten in a particular form,it is possible to transform such states into other states using lowerdimensional unitary operations that can be more easily realized in physical experiments.Furthermore,as an important application,we propose a generalized scheme that helps construct faithful quantum channels via various probabilistic channels when considering the existence of nonmaximally-entangled states.We present a scheme for probabilistic transformation of special quantum states assisted by auxiliary qubits. In our scheme, if quantum states can be rewritten in a particular form, it is possible to transform such states into other states using lower- dimensional unitary operations that can be more easily realized in physical experiments. Furthermore, as an important application, we propose a generalized scheme that helps construct faithful quantum channels via various probabilistic channels when consid- ering the existence of nonmaximally-entangled states.

关 键 词：量子比特 通用设计方案 状态转换 传输协议 隐形 非最大纠缠态 物理实验 量子通道 

分 类 号：O413.1[理学—理论物理] TP38[理学—物理]